BoyPete wrote:
I intend building a pergola type structure over my pond. I want to
use a covering for the top to create some shade. As the top will be
level, I can't use a waterproof material. I'd 'like' to use something
more natural. Reed matting perhaps? I wondered if the gardening
community might advise? Thanks

bamboo or reed on a roll.

google will help

pk